return (f.charCodeAt(0) <= 90 ? "w" + f.toLowerCase() : "b" + f);
}
- // Setup the initial random-or-not (asymmetric-or-not) position
genRandInitFen(seed) {
+ Random.setSeed(seed); //may be unused
+ let baseFen = this.genRandInitBaseFen();
+ baseFen.o = Object.assign({init: true}, baseFen.o);
+ const parts = this.getPartFen(baseFen.o);
+ return (
+ baseFen.fen +
+ (Object.keys(parts).length > 0 ? (" " + JSON.stringify(parts)) : "")
+ );
+ }
+
+ // Setup the initial random-or-not (asymmetric-or-not) position
+ genRandInitBaseFen() {
let fen, flags = "0707";
if (!this.options.randomness)
// Deterministic:
else {
// Randomize
- Random.setSeed(seed);
let pieces = {w: new Array(8), b: new Array(8)};
flags = "";
// Shuffle pieces on first (and last rank if randomness == 2)
flags += flags;
break;
}
-
let positions = ArrayFun.range(8);
-
// Get random squares for bishops
let randIndex = 2 * Random.randInt(4);
const bishop1Pos = positions[randIndex];
// Remove chosen squares
positions.splice(Math.max(randIndex, randIndex_tmp), 1);
positions.splice(Math.min(randIndex, randIndex_tmp), 1);
-
// Get random squares for knights
randIndex = Random.randInt(6);
const knight1Pos = positions[randIndex];
randIndex = Random.randInt(5);
const knight2Pos = positions[randIndex];
positions.splice(randIndex, 1);
-
// Get random square for queen
randIndex = Random.randInt(4);
const queenPos = positions[randIndex];
positions.splice(randIndex, 1);
-
// Rooks and king positions are now fixed,
// because of the ordering rook-king-rook
const rook1Pos = positions[0];
const kingPos = positions[1];
const rook2Pos = positions[2];
-
// Finally put the shuffled pieces in the board array
pieces[c][rook1Pos] = "r";
pieces[c][knight1Pos] = "n";
" w 0"
);
}
- // Add turn + flags + enpassant (+ reserve)
- let parts = [];
- if (this.hasFlags)
- parts.push(`"flags":"${flags}"`);
- if (this.hasEnpassant)
- parts.push('"enpassant":"-"');
- if (this.hasReserveFen)
- parts.push('"reserve":"000000000000"');
- if (this.options["crazyhouse"])
- parts.push('"ispawn":"-"');
- if (parts.length >= 1)
- fen += " {" + parts.join(",") + "}";
- return fen;
+ return { fen: fen, o: {flags: flags} };
}
// "Parse" FEN: just return untransformed string data
// Return current fen (game state)
getFen() {
- let fen = (
- this.getPosition() + " " +
- this.getTurnFen() + " " +
- this.movesCount
+ const parts = this.getPartFen({});
+ return (
+ this.getBaseFen() +
+ (Object.keys(parts).length > 0 ? (" " + JSON.stringify(parts)) : "")
);
- let parts = [];
+ }
+
+ getBaseFen() {
+ return this.getPosition() + " " + this.turn + " " + this.movesCount;
+ }
+
+ getPartFen(o) {
+ let parts = {};
if (this.hasFlags)
- parts.push(`"flags":"${this.getFlagsFen()}"`);
+ parts["flags"] = o.init ? o.flags : this.getFlagsFen();
if (this.hasEnpassant)
- parts.push(`"enpassant":"${this.getEnpassantFen()}"`);
+ parts["enpassant"] = o.init ? "-" : this.getEnpassantFen();
if (this.hasReserveFen)
- parts.push(`"reserve":"${this.getReserveFen()}"`);
+ parts["reserve"] = this.getReserveFen(o);
if (this.options["crazyhouse"])
- parts.push(`"ispawn":"${this.getIspawnFen()}"`);
- if (parts.length >= 1)
- fen += " {" + parts.join(",") + "}";
- return fen;
+ parts["ispawn"] = this.getIspawnFen(o);
+ return parts;
}
static FenEmptySquares(count) {
return position;
}
- getTurnFen() {
- return this.turn;
- }
-
// Flags part of the FEN string
getFlagsFen() {
return ["w", "b"].map(c => {
// Enpassant part of the FEN string
getEnpassantFen() {
if (!this.epSquare)
- return "-"; //no en-passant
+ return "-";
return C.CoordsToSquare(this.epSquare);
}
- getReserveFen() {
+ getReserveFen(o) {
+ if (o.init)
+ return "000000000000";
return (
["w","b"].map(c => Object.values(this.reserve[c]).join("")).join("")
);
}
- getIspawnFen() {
+ getIspawnFen(o) {
+ if (o.init)
+ // NOTE: cannot merge because this.ispawn doesn't exist yet
+ return "-";
const squares = Object.keys(this.ispawn);
if (squares.length == 0)
return "-";
if (o.genFenOnly)
// This object will be used only for initial FEN generation
return;
+
+ // Some variables
this.playerColor = o.color;
this.afterPlay = o.afterPlay; //trigger some actions after playing a move
+ this.containerId = o.element;
+ this.isDiagram = o.diagram;
+ this.marks = o.marks;
- // Fen string fully describes the game state
+ // Initializations
if (!o.fen)
o.fen = this.genRandInitFen(o.seed);
this.re_initFromFen(o.fen);
-
- // Graphical (can use variables defined above)
- this.containerId = o.element;
- this.isDiagram = o.diagram;
this.graphicalInit();
}
this.setFlags(fenParsed.flags);
if (this.hasEnpassant)
this.epSquare = this.getEpSquare(fenParsed.enpassant);
- if (this.hasReserve)
+ if (this.hasReserve && !this.isDiagram)
this.initReserves(fenParsed.reserve);
if (this.options["crazyhouse"])
this.initIspawn(fenParsed.ispawn);
// VISUAL METHODS
graphicalInit() {
- // NOTE: not window.onresize = this.re_drawBoardElts because scope (this)
- window.onresize = () => this.re_drawBoardElements();
const g_init = () => {
this.re_drawBoardElements();
- if (!this.isDiagram)
+ if (!this.isDiagram && !this.mouseListeners && !this.touchListeners)
this.initMouseEvents();
};
let container = document.getElementById(this.containerId);
- if (container.getBoundingClientRect().width == 0) {
- // Element not ready yet
- let ro = new ResizeObserver(() => {
- ro.unobserve(container);
- g_init();
- });
- ro.observe(container);
- }
- else
- g_init();
+ this.windowResizeObs = new ResizeObserver(g_init);
+ this.windowResizeObs.observe(container);
}
re_drawBoardElements() {
cbHeight = Math.min(rc.height, 767);
cbWidth = cbHeight * vRatio;
}
- if (this.hasReserve) {
+ if (this.hasReserve && !this.isDiagram) {
const sqSize = cbWidth / this.size.y;
// NOTE: allocate space for reserves (up/down) even if they are empty
// Cannot use getReserveSquareSize() here, but sqSize is an upper bound.
}
setupPieces(r) {
- // TODO: d_pieces : only markers (for diagrams) / also in rescale()
- if (this.g_pieces) {
- // Refreshing: delete old pieces first
- for (let i=0; i<this.size.x; i++) {
- for (let j=0; j<this.size.y; j++) {
- if (this.g_pieces[i][j]) {
- this.g_pieces[i][j].remove();
- this.g_pieces[i][j] = null;
- }
- }
- }
- }
- else
- this.g_pieces = ArrayFun.init(this.size.x, this.size.y, null);
let chessboard =
document.getElementById(this.containerId).querySelector(".chessboard");
if (!r)
r = chessboard.getBoundingClientRect();
const pieceWidth = this.getPieceWidth(r.width);
+ const addPiece = (i, j, arrName, classes) => {
+ this[arrName][i][j] = document.createElement("piece");
+ C.AddClass_es(this[arrName][i][j], classes);
+ this[arrName][i][j].style.width = pieceWidth + "px";
+ this[arrName][i][j].style.height = pieceWidth + "px";
+ let [ip, jp] = this.getPixelPosition(i, j, r);
+ // Translate coordinates to use chessboard as reference:
+ this[arrName][i][j].style.transform =
+ `translate(${ip - r.x}px,${jp - r.y}px)`;
+ chessboard.appendChild(this[arrName][i][j]);
+ };
+ const conditionalReset = (arrName) => {
+ if (this[arrName]) {
+ // Refreshing: delete old pieces first. This isn't necessary,
+ // but simpler (this method isn't called many times)
+ for (let i=0; i<this.size.x; i++) {
+ for (let j=0; j<this.size.y; j++) {
+ if (this[arrName][i][j]) {
+ this[arrName][i][j].remove();
+ this[arrName][i][j] = null;
+ }
+ }
+ }
+ }
+ else
+ this[arrName] = ArrayFun.init(this.size.x, this.size.y, null);
+ if (arrName == "d_pieces")
+ this.marks.forEach(([i, j]) => addPiece(i, j, arrName, "mark"));
+ };
+ if (this.marks)
+ conditionalReset("d_pieces");
+ conditionalReset("g_pieces");
for (let i=0; i < this.size.x; i++) {
for (let j=0; j < this.size.y; j++) {
if (this.board[i][j] != "") {
const color = this.getColor(i, j);
const piece = this.getPiece(i, j);
- this.g_pieces[i][j] = document.createElement("piece");
- C.AddClass_es(this.g_pieces[i][j],
- this.pieces(color, i, j)[piece]["class"]);
+ addPiece(i, j, "g_pieces", this.pieces(color, i, j)[piece]["class"]);
this.g_pieces[i][j].classList.add(C.GetColorClass(color));
- this.g_pieces[i][j].style.width = pieceWidth + "px";
- this.g_pieces[i][j].style.height = pieceWidth + "px";
- let [ip, jp] = this.getPixelPosition(i, j, r);
- // Translate coordinates to use chessboard as reference:
- this.g_pieces[i][j].style.transform =
- `translate(${ip - r.x}px,${jp - r.y}px)`;
if (this.enlightened && !this.enlightened[i][j])
this.g_pieces[i][j].classList.add("hidden");
- chessboard.appendChild(this.g_pieces[i][j]);
+ }
+ if (this.marks && this.d_pieces[i][j]) {
+ let classes = ["mark"];
+ if (this.board[i][j] != "")
+ classes.push("transparent");
+ addPiece(i, j, "d_pieces", classes);
}
}
}
- if (this.hasReserve)
+ if (this.hasReserve && !this.isDiagram)
this.re_drawReserve(['w', 'b'], r);
}
}
removeListeners() {
+ let container = document.getElementById(this.containerId);
+ this.windowResizeObs.unobserve(container);
if (this.isDiagram)
return; //no listeners in this case
if ('onmousedown' in window) {
if (piece == "p" && this.hasEnpassant && this.epSquare)
Array.prototype.push.apply(moves, this.getEnpassantCaptures([x, y]));
if (
- piece == "k" && this.hasCastle &&
+ this.isKing(0, 0, piece) && this.hasCastle &&
this.castleFlags[color || this.turn].some(v => v < this.size.y)
) {
Array.prototype.push.apply(moves, this.getCastleMoves([x, y]));
);
}
- underCheck([x, y], oppCol) {
+ // Argument is (very generally) an array of squares (= arrays)
+ underCheck(square_s, oppCol) {
if (this.options["taking"] || this.options["dark"])
return false;
- return this.underAttack([x, y], oppCol);
+ if (!Array.isArray(square_s[0]))
+ square_s = [square_s];
+ return square_s.some(sq => this.underAttack(sq, oppCol));
}
- // Stop at first king found (TODO: multi-kings)
+ // Scan board for king(s)
searchKingPos(color) {
+ let res = [];
for (let i=0; i < this.size.x; i++) {
for (let j=0; j < this.size.y; j++) {
if (this.getColor(i, j) == color && this.isKing(i, j))
- return [i, j];
+ res.push([i, j]);
}
}
- return [-1, -1]; //king not found
+ return res;
}
// 'color' arg because some variants (e.g. Refusal) check opponent moves
if (!color)
color = this.turn;
const oppCol = C.GetOppCol(color);
- const kingPos = this.searchKingPos(color);
+ let kingPos = this.searchKingPos(color);
let filtered = {}; //avoid re-checking similar moves (promotions...)
return moves.filter(m => {
const key = m.start.x + m.start.y + '.' + m.end.x + m.end.y;
if (!filtered[key]) {
this.playOnBoard(m);
- let square = kingPos,
+ let newKingPP = null,
+ sqIdx = 0,
res = true; //a priori valid
- if (m.vanish.some(v => this.isKing(0, 0, v.p) && v.c == color)) {
+ const oldKingPP =
+ m.vanish.find(v => this.isKing(0, 0, v.p) && v.c == color);
+ if (oldKingPP) {
// Search king in appear array:
- const newKingIdx =
- m.appear.findIndex(a => this.isKing(0, 0, a.p) && a.c == color);
- if (newKingIdx >= 0)
- square = [m.appear[newKingIdx].x, m.appear[newKingIdx].y];
+ newKingPP =
+ m.appear.find(a => this.isKing(0, 0, a.p) && a.c == color);
+ if (newKingPP) {
+ sqIdx = kingPos.findIndex(kp =>
+ kp[0] == oldKingPP.x && kp[1] == oldKingPP.y);
+ kingPos[sqIdx] = [newKingPP.x, newKingPP.y];
+ }
else
- res = false;
+ res = false; //king vanished
}
- res &&= !this.underCheck(square, oppCol);
+ res &&= !this.underCheck(kingPos, oppCol);
+ if (oldKingPP && newKingPP)
+ kingPos[sqIdx] = [oldKingPP.x, oldKingPP.y];
this.undoOnBoard(m);
filtered[key] = res;
return res;
return false;
const color = this.turn;
const oppKingPos = this.searchKingPos(C.GetOppCol(color));
- if (oppKingPos[0] < 0 || this.underCheck(oppKingPos, color))
+ if (oppKingPos.length == 0 || this.underCheck(oppKingPos, color))
return true;
return (
(
getCurrentScore(move) {
const color = this.turn;
const oppCol = C.GetOppCol(color);
- const kingPos = [this.searchKingPos(color), this.searchKingPos(oppCol)];
- if (kingPos[0][0] < 0 && kingPos[1][0] < 0)
+ const kingPos = {
+ [color]: this.searchKingPos(color),
+ [oppCol]: this.searchKingPos(oppCol)
+ };
+ if (kingPos[color].length == 0 && kingPos[oppCol].length == 0)
return "1/2";
- if (kingPos[0][0] < 0)
+ if (kingPos[color].length == 0)
return (color == "w" ? "0-1" : "1-0");
- if (kingPos[1][0] < 0)
+ if (kingPos[oppCol].length == 0)
return (color == "w" ? "1-0" : "0-1");
if (this.atLeastOneMove(color))
return "*";
// No valid move: stalemate or checkmate?
- if (!this.underCheck(kingPos[0], oppCol))
+ if (!this.underCheck(kingPos[color], oppCol))
return "1/2";
// OK, checkmate
return (color == "w" ? "0-1" : "1-0");
projects / xogo.git / blobdiff